767748 - A different font is used for specific table cell elements when an email is UTF-8 encoded

Status: UNCONFIRMED

(Thunderbird :: Message Reader UI, defect)

Description

[Mike Robinson]

Attachment: thunderbird_font_bug.png

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.56 Safari/536.5

Steps to reproduce:

Note, this bug was non-existent in version 12. However versions 13 and 15 both have this bug. Using Linux for all.

Send the following message to yourself using UTF-8 formatting. Note, ISO-8859-1 does not have this bug, only UTF-8:

		This is just text <!-- Displays correctly -->
		<p>Text in p here</p> <!-- Displays correctly -->
		<div>Text in div</p> <!-- Displays correctly -->
		<table>
			<tr>
				<td>Test in table cell (valid)</td> <!-- Does not display correctly -->
			</tr>
		</table>
		<tr>Test in invalid tr</tr> <!-- Displays correctly -->
		<br />
		<td>Test in invalid td</td> <!-- Displays correctly -->
		<br />
		<table>Test invalidly inside table</table> <!-- Displays correctly -->
		<table>
			<td>Test in td without tr</td> <!-- Does not display correctly -->
		</table>
		<table>
			<tr>Test in tr without td</tr> <!-- Displays correctly -->
		</table>
		<tr>
			<td>Test in td with tr without table</td> <!-- Displays correctly -->
		</tr>




Actual results:

Notice how the text that is within a <td> that has a parent (or grandparent) <table> is displayed using an incorrect (larger) font. However, if you reply to the message, it is rendered correctly in the reply window. Also, manually clicking on "View" > "Character Encoding" > "Western (ISO-8859-1)" fixes this problem immediately.


Expected results:

All fonts should be rendered the same no matter where they appear in the HTML or what encoding is used unless changed by CSS or similar.

Comment 1

[Mike Robinson]

Note: manually changing font.size.variable.x-unicode to the same value as font.size.variable.x-western seems to fix the problem. So then maybe the question should be why part of the email is rendered in unicode and the other part in western.

Comment 2

[Ludovic Hirlimann [:Usul]]

Can we have a test email ?

Comment 3

[Mike Robinson]

Attachment: Email that causes the font error

Comment 4

[Mike Robinson]

I already provided one (see my original comment), so all you have to do is send it with header "Content-type: text/html; charset=utf-8". I've added another attachment containing the email.